/*
 * Copyright 2020 Netflix, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.netflix.graphql.dgs.internal

import graphql.schema.idl.errors.SchemaProblem
import org.springframework.boot.diagnostics.AbstractFailureAnalyzer
import org.springframework.boot.diagnostics.FailureAnalysis
import java.util.stream.Collectors

/**
 * Spring failure analyzer that reports schema problems at startup in a more readable way.
 */
class SchemaFailureAnalyzer : AbstractFailureAnalyzer<SchemaProblem?>() {
    override fun analyze(rootFailure: Throwable?, cause: SchemaProblem?): FailureAnalysis {
        return FailureAnalysis("There are problems with the GraphQL Schema:\n" +
                cause!!.errors
                        .stream()
                        .map(Any::toString)
                        .collect(Collectors.joining("\n\t * ", "\t * ", "\n")),
                null,
                cause)
    }
}